Detachable rim for resilient tires.



J. W. HALL & C. BAYNES.

DETACHABLE RIM FOR RESILIENT TIRES.

APPLICATION HLED APR. 2 1912.

1,142,563, Patented June 8,1915;

3 SHEETSSHEET I.

I. W. HALL & 6. BAYNES.

DETA'GHABLE RIM FOR RESILIENT TIRES.

APPLICAHON men APR- 2. 1912.

1,142,563, I Patented June 8,1915.

3 SHEETS-SHEET 2.

]..W. HALL & C. BAYNES.

DETACHABLE mm FOR RESlLIENT TIRES.

APPLICATION FILED APR. 2, 191 2. 1,142,563, Patented June 8, 1915.

3 SHEETS-SHEET 3-- mean and UNITED s I Erica.

' JOHN HALL AND CYRIL BAYNES, 01? LONDON, ENGLAND.

DETACHABLE RIM FOR RESILIENT TIRES.

To? all whom it may concern Be it known that we, J OHN VVILLIAM HALL GYBIL BAYNES, subjects of the King of England, both residing in London, England, have invented certain new and useful Improvements in Detachable Rims for Besilient Tires, of which the following is a p specification.

' This invention relates to improvements in detachable rims for resilient tires and has for its object to enable the rim and tire, when the latter is either fully inflated or otherwise, tohe rapidly placed in position on'the wheel and secured thereto.

According to this invention, there is provided for each vehicle wheel a detachable rim'oomprising a plurality of independent ,separable rim segments which are adapted to hold a tire and whoseetlective internal perimeter measured, when the parts are assembled in a plane normal to the wheel axis, is less than the. perimeter of the rim-seating portion of the Wheel in that plane and cooperating wedging surfaces on the rim-segments and on the Wheel, said cooperating wedging surfaces having relat ve inclination in a direction transverse to the plane of the wheel.

' The words efiective internal perimeter occurring n connection with the rim, are intended to include only the sum of the lengths of the rimsegments; or Where the Y rimsegments are provided With inclined wedging surfaces or wedge-shaped feet, the

eifective. internal perimeter is the sum of the lengths of imaginary lines subtend' ing the rim-segments and joining the con- ,tact surfaces of the seating surfaces or feet. In other words, the efieetive internal perimeter of the rim is the internal circumference minus any gaps which may occur between the rim-segments, or a'corresponch ing measurement at the seating surfaces engaging the rim-seating portion on the wheel.

The relatively inclined bearing surfaces enable the rim, as a whole, to be expanded to the diameter of the rim-seating portion on the wheel or bonding band, and so, by pres sureof the inflated tire, to assume a close fit to the wheel. The enlargement of the rim may also expandthe the in cases where it also, when oif the wheel, is normally smaller in perimeter than the wheel. Preferably,

Specification of Letters Patent.

Patented June 8, 1915.

Application filed April 2, 1912. Serial No. 637,975.

the coacting surfaces on the rim are in the form of separated inclined wedging-surfaces or wedge-shaped feet.

In a construction having the features above described, the rim is preferably capable of being hooked or otherwise similarly secured to the wheel at one point, so that the remainder of the rim may he swung about that point as a fulcrum to apply it to the wheel, and during such application to expand the rim in the manner above rcferrod to.

The term rim-seating portion of the wheel refers in the particular construction illustrated to the folly band on the periphery of the wheel, upon which the detachable rim is seated when in place.

Other features of the present invention will be more clearly understood from the following description taken in connection with the accompanying drawings, which wheel; Fig. 5 is a similar view to Fig. 4,

showing the rim completely applied to the wheel; Fig. 6 diagrammatically illustrates the method employed for applying the rim to the wheel, Fig. 7 is a diagram illustrating certain features in the formation of the rimsegments; Fig. 8 is a view similar to Fig. 7, showing a modified form of segments; Fig. 9 IS a perspective view of a modified form ofitoot for the rim segments; Fig. 10 is a transverse sectional view through a modified form of rim segment; Fig. 11 is a transverse sectional view through another modified form of rim segment and foot attached thereto; and Fig. 12 is a sectional view of another modified form of rim segment.

Like letters indicate like out the drawings.

In the particular construction illustrated the rimis divided into four segments such as A, although it may be out into a larger or smaller number of segments as found parts throughconvenient. Each segment has secured to it a Hanger-k projecting inwardly at right-' angles from its underside and to one edge thereof the flanges forming, when the rimsegments are assembled on the wheel, a sub stanlially circular flange. Each rim-segment is provided with feet or supports 13, there being preferably five of such feet to each rim-segment. The feet are cast or port-ion B which is approximately parallel to the transverse surface of the rim-segment. The lecture riveted or otherwise secured to the underside of the rim-segment so that the portion B of each foot is close to the flange A. The tapered end of the portion l3 aml the extremity ofthe foot near that portion leian'inates a little short of the edge of the rim-segment. I

As shown'in Fig. 2 that segment in which there is'a hole C provided to accommodate the valve-spindle from the inner tube of thetire has also a projection such as D secured as shown in the drawings which may act as a driving stopand a locating stop to locate the rim in its correct position on the wheel and to act as a fulcrum point when ihe'rim and tire together are swung on to the wheel in the manner tobe more particularly described hereinafter. The end of e-a-n rim-segment is slotted as at E to reeeive a portion of the boss of a security-pad which is placed at the junction of each pair of segments.

Referring to Figs. 3, l: and 5, it willbe seen that the wheel is of ordinary construction and although it is shown as having a solid folly, the latter may be equally well of a hollow formation. The felly F is surrounded by 'a bonding band F having an outwardly projecting flange F extending completely around one edge of the bonding band. ."tt intervals around the felly are radial slots, each of which is provided with .a sleeve (l constructed as shown in the drawfings to have two restricted cylindrical portions and G and an enlarged portion G connecting them. The holes in the folly are so disposed that when the rim is in its correct position on the wheel the joints of the rim-segments will come just over the holes so that a security-pad located at the junction of the meeting ends of two rimsegments may be readilyengaged by a security-bolt passing through the hole. The security-bolt H itself has two cylindrical portions H and H adapted to fit in the portions G- and Gr respectively of the sleeve G and it also has a restricted portion H between theportions H and H Further, a

projecting portion H is provided with a.

screw-thread adapted to engage with a simi larly threaded portion inthe'security-pad.

The security-pad itself is of usual construcstamped as illustrated in the drawings andeach of them hasawedge-surface B and a tion and has a boss J having a screwthreaded portion to receive the screwed projection H' from the security-bolt.

To apply the rim and the tire to the wheel the rim-segments are firstapplied to the tire, security-pads having been previously inserted at the junction of the rimi e segments. The last r1m-segment may be applied if necessary with any convement form of lever and when all the rim-segments are in place the elfective internal perimeter of. the run as a wholewill be less than the outeiperimeter of the wheel. That is to say, when the segments abut at their meeting ends, the perimeter of an imaginary line parallel to the run and passing through the points of contact of the bearing surface B will be less than the perimeter ofthe bonding band F; or the inner perimeter of the run when the sections abut will be less than the outer perimeter of the flange F of the bonding band F The valve-stem from the tire projecting through the hole G in the rim is passed through a radial hole or slot provided in the folly for its reception and the projection or stop D is also inserted in a 11010 n provided in the bonding band F1 as shown in Fig.6. When this. has been done the rimand tire will be inthe position shown in that figure relatively to the wheel and the other portion of the rim may then be forced on to the rim seating portion of'the wheeLeither by hand-pressure or by means of a cramp and during the application, the wedge-surfaces l3 engaging with the edge of the bonding band'F cause the rim-segments to part and the rim and tire as'a whole to be expanded. When the rim is in place the front beveled edges of the feet B will preferably abut against the inner edge of the flange F, the free portion of the rim extended beyondthe feet, resting on the top of the flange, and the flange A of the rim-segments will engage with the opposite side of the folly. The securitypads will then be in positionsapproximately over the holes in the sleeves G and by-the construction of the sleeves and the security-- bolts H the projection H of the latter may be moved about until it engages the screwsocket in the boss J. Fig. 4 shows a case in which the rim has not been fully pressed home on to the folly of the wheel but owing to its movement the security-bolt has been enabled to engage the screw-socket of the boss J. By screwing the security-bolt comslide completely home and to draw the security-pads, and with them the rim-Beg? ments, into their correct positions.

It is preferable to construct the rim-Seg ments so that they have not normally the same curvature as that of the seating portion on the wheel. 1 In the diagram, Fig. 7-, itwill be seen that theends of the rim-segments in the lower portion of the wheel do not engage the periphery. of the wheel until they are screwed home, while in the upper portion of Fig. 7 the ends of the rim-segments, have been shown as drawn home by the=security-bolts when they will lie closely aroundthe' periphery of the wheel and form a good grip. Obviously each segment could be .made with a curvature struck from a radius smaller than that of the wheel as shown in Fig. 8, in which case means would be provided for drawing the middle portion of each rim-segment down to the' seating portion on the wheel.

1-Many modifications maybe made in carrying the invention into effect, for example, the inclined portions of some or all of the feet B; in each seciion may be slotted from their apices so that they may engage corresponding pins on the periphery of the wheel sons to guide each section into its allotted position as shown in'Fig. 9.

AIlOtl'lBl? construction may provide that the; formv of seating portions differs from that already described. No limitatlon 1s 1m- .posed-upon the construction of felly or seat- .1. ing portion employed although preferably itshall provide surfaces to co-act with those producing-the wedging action on the rimsegments and also other surfaces actlng as bearing surfaces for the rim-segments when .they are in position. Consequently, the rim may be coned in, the middle portion in a transverse directi0n.the two edges being, however, cylindrical as shown in Fig. 10 or in any other desired manner.

Security-pads and bolts as described may be replaced by security-pads fixed inside the tire at the junction of the, r1m'-segments, the latter being securedto the wheel by bolting through the depending flange or by any convenient holding means.

:With rims divided transversely in the manner described herein it is advisable to provide means for preventing the passage of dirt,water or other foreign matter into the spaee between the head of: the tire and the rim. To effect this, inside the head of the rim-section at each end a plate K, (as shown in Fig. 12) may be secured as by riveting orsweating and is-so shaped that it is thickerat i he middle of its cross-section than at the edge. .Thuswhen a tire is in position these plates will embed themselves In the tireand thus close the entry of the space in which the foreign matter willotherwise accum'ulater portion of the wheel in that plane,

tion is not-departed from;

What we claim as our invention and desire tosecure by Letters Patent is:

I. In a detachable rim for a vehicle wheel, the combination of a plurality of independent separable rim-segments which are adapted to hold a tire and whoseeflective perimetermeasured, when the parts are assembled, in a plane normal to the wheel-axis is less than the externalperimeter of the rim seating portion on the wheel in that plane, and coiiperatin'g wedgingsurfaces on the rimsegments and on the wheel, said cooperating surfaces having relative inclination in a di rection transverse to the plane of the wheel.

2. In a detachable rim, the combination with a vehicle wheel, of a resilient tire, a plurality of independent separable rim-segments for holding the tire, a seating surface I on each of said segments resting on a seat ing portions adapted to-spread thetire andsegments when placing the tire in position on the wheel, a wheel and an annular flange extending beyond the periphery thereof arranged to form a stop for the segments and a support for one edge of the latter.

4. In adetachable rim, the combination of a plurality of independent separable rimsegments which are adapted to hold a tire and whose effective internal perimeter meas-- ured, when the parts are assembled, in a plane normal to the wheel-axis is less than the external perimeter of the rim seating portion of the wheel in that plane, coiiperating wedging surfaces on the rim-segments and the wheel, said cooperative surfaces having relative inclination in a direction transverse to the plane of the wheel, and a radial projection extending outwardly from one side of the rim seating portion to support one edge of the detachable rim.

5. In a detachable rim, the combination of a plurality of independent separable rims'egments which are adapted-to hold the tire and whose effective internal perimeter measured, when the parts are assembled in a plane normal to the wheel-axis is less than the external perimeter of the rim seating a wheel,

izo

a bonding band for the wheeI-felly, an outwardly extending radial flange around one side of the bonding band, and cooperating wed in surfaces on the rim-segments and on t as ndin band, said cobperating surfaces being're atively inclined in a direction transverse to the plane of the wheel.

6. A combined wheel and resilient tire securing device,- comprising' a plurality of independent separable rim-segments for holding the tire, each of said segments having a seating portion for engaging the periphery of the Wheel, there being an inclined engagement between said segments and the periphery of the wheel to expand the segments of the rim when they are applied to the wheel, radial security bolts for connecting thesegments to the wheel, and an inclined portion on each of said'bolts for center whe, 1

7. A combined wheel and resilient tire securing device, comprising a plurality of inde endent "separable rim-segmentsfor holding the tire, each of said segments having a lurah'ty of feet having seating portions or engaging the periphery of the wheel, there being an inclined engagement between said feet and the periphery of the Wheel to expand the segments of therim when they are applied to the wheel, radial security bolts for connecting the segments'to' the wheel, and an inclined portion on eachi of said. bolts for centering the segments with relation to the wheel.

8. A combined wheel and resilient tire securing device, comprising a plurality of independent separable rim-segments for I holding the tire, each of said segments having a seating portion for engaging the peripery of the wheel, there being an inclined engagement between said segments and the periphery of the wheel to expand the segments of the rim when they are applied to the wheel, radial security bolts for connecting the segments to the wheel, said bolts having arestrictcd portion which its loosely within a radial aperture extending through the telly of the wheel for the purpose described.

. 9. A combined wheel and resilient tire securing device, comprising a plurality of independent separable rim-segments for holding the tire, each of said segment-s having a seating portion for engagingthe periphery of the wheel, there being an inclined engagement between said segments and the periphery of'the wheel'to expand the segments of the rim when they are applied to theiwheel, radial security bolts for connecting the segments to the wheel, an inclined portion on each of said bolts, a re stricted portion behind said inclined portionand adapted to fit loosely in a radial aperture extending through the telly.

the segments with relation to the the wheel, radial security bolts for connecting the segments to the wheel, two cylindrical enlargements-on the bolts spaced from one another and connected by a restricted portion, each of said enlargements tapering toward the -sore\v-threade( l portion, of the bolt, and a wheel-folly having radial apertures extending therethrough, the apertures being so dimensioned that at their ends they fit the enlarged. portions of the bolt. while between the ends is an aperture larger in diameter than the end port ons thereof.

11'. For a 'vehicle wheel, the combination of a detachable rim transversely dividedinto a plurality of independent sel iarable 'seg-' ments, each segment being so curved that in an unrestrained condition it willcngage the rim seating portion of the wheel for a portion only of its length, and a bolt coaeti'ng therewith and arranged at that portion ofthe segment which does not engage the seating portion to force or constrain'thc segment into engagement with the seating, portion.

12. In a detachable rim, the combination "of a plurality ofindependcnt separable rimsegmen'ts which are adapted to hold a tire and whose efi'ective' internal perimeter HIGHS-4 ured, when the parts are assembled in a plane normal. to the wheel-axis is less than the external perimeter of the run seatin portion of the wheel. in that plane, each 0 the said v segments .beingso curved that'in an unrestrained condition it will engage the seating portion of the wheel for a portion 'only of its length, bolts coacting withthe segments and arranged at that portion of the segment which does not engage the seating portion to force or constrain it into engagement therewith, and cooperating wedging surfaces on therini segments and on the seating portion on the wheel,'said coiiperating sur-- faces being relatively inclined in a. direction transverse to the plane of the wheel.

13. For a vehicle'wheel, the combination of a detachable rim transversely divided into a plurality of independent separable segments, each segment being so curved that it would engage the rim seating portion of the wheel only at 'or about midway of its length, and radially disposed, bolts extending through the felly and engaging the segments at each of their ends to force or constrain the segments into engagement with the seating portion.

14. For a vehicle wh l the c in t on of a detachable rim transversely divided into a plurality of independent separable seg-- ments, each segment having on it a plurality of seating projections for engaging the periphery of the wheel and being so curved that in an unrestrained condition those pr0 jections extending from a portion only of 'the length of the segment will engage the periphery of the Wheel, and a bolt coacting with each segment and arranged at that portion thereof where the projections do not engage the periphery to force or constrain them into engagement therewith.

15. in a detachable rim for vehicle-Wheels, the combination with a resilient tire of a plurality of independent separable rim-segments for holding the tire, a plurality of separated seating portions oneach of the rim segments the perimeter of the seating portions of the rim-segments being less than the perimeter of the seats on the heel for said portions, there being an inclined engagement between the Wheel and the rimsegments for expanding therims-segments and the tire when placing them on the wheel.

16. A detachable rim for tires for vehicle Wheels, comprising a plurality of independent separable rim segments which are adapted to hold a tire and an inclined portion on each of the segments extending from a. point near one edge of the segments toward the other edge thereof.

In testimony whereof We have signed our names to this specification in the presence of two subscribing Witnesses.

' JOHN WILLIAM HALL ()YRIL BAYNES. Witnesses:

RONALD S. DoLLEYMonE, HARRY B. BRIDGE. 

